What stops you lifting piece of lamb from cold store? (6,8)
I believe the answer is:
frozen shoulder
'what stops you lifting' is the definition.
'cold store?' is the wordplay.
'cold' becomes 'frozen' ('frozen' is associated in meaning with 'cold').
'store?' becomes 'shoulder' (I can't explain this - if you can you should believe this answer much more).
'frozen'+'shoulder'='FROZEN SHOULDER'
'piece of lamb from' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
(Other definitions for frozen shoulder that I've seen before include "could be a pain" , "Getting alternative to fresh cut of meat" , "Perhaps extreme indifference" , "making it difficult to take up arms?" .)